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Lake Tecopa

Prospect in Inyo county in California, United States with commodities Zeolites, Boron-Borates
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Economic information about the deposit and operations
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10100710
MRDS ID I002006
MAS/MILS ID 0060270148
Record type Site
Current site name Lake Tecopa

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -116.2416, 35.9226 (WGS84)
Location accuracy 100(meters)
Relative position SSE OF SHOSHONE, CALIFORNIA, AND 60 MILES WEST OF LAS VEGAS, NEVADA.

Site location context

Political divisions (FIPS codes)

Inyo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Resting Spring(quadrangle 1:24,000 scale)

Owlshead Mountains(quadrangle 1:100,000 scale)

Trona(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Amargosa(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 025 N 006 E 09 California

Commodities

Commodity Importance
Zeolites Primary
Boron-Borates Tertiary

Materials information

Materials Type of material
Chabazite Ore
Clinoptilolite Ore
Erionite Ore
Analcime Ore
Clinoptilolite Ore
Phillipsite Ore
Calcite Gangue
Clay Gangue
Opal Gangue
Searlesite Gangue
Montmorillonite Gangue
Illite Gangue
Feldspar Gangue

Mineral occurrence model information

Model code 171
USGS model code 25ob
Deposit model name Sedimentary zeolites: Zeolites in tuffs of saline, alkaline-lake depos

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pleistocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff

Nearby scientific data

Ore Body (1) -116.2416, 35.9226
ListMap

Economic information

Geologic structures

Type of structure Local
Structure name normal faults
Structure description Normal Faults Cut Lake Deposits In The Southeast Part Of The Basin

Comments on the geologic information

  • DEPOSITS OF LAKE TECOPA COVER ABOUT 90 SQUARE MILES AND THE 220 FOOT SECTION CONTAINS 12 DISTINCT TUFF LAYERS. MUCH OF THE LAKE DEPOSITS HAVE BEEN ERODED AWAY BY THE AMARGOSA RIVER.

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Non-metallic
Deposit size Small
Significant Yes

Ownership information

  • Type Operator
    Owner Rook And Messer Excavating Co.
    Home office 404369 California
    Year 1980
  • Type Owner-Operator
    Owner East West Minerals Inc.
    First year 1988

Comments on development

  • ECON.COM: PRODUCTION IS PROCESSED AT AN 8000 TPA PLANT IN THE AMARGOSA VALLEY OF NEVADA. PRODUCTION IN 1988 WAS ONLY ABOUT 10% OF CAPACITY. OPERATION SUPPLIES CUSTOMERS THROUGHOUT THE UNITED STATES, EUROPE, AND THE FAR EAST.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ZEOLITES ARE FOUND IN TUFFS OF PLEISTOCENE LAKE TECOPA. THREE DIAGENTIC MINERAL FACIES ARE PRESENT. THE ZEOLITE-BEARING TUFFS FORM A HORSESHOE-SHAPED MAP PATTERN OPEN TO THE SOUTHEAST. TOWARDS THE LAKE MARGINS, THE ZEOLITE-BEARING FACIES GRADES INTO THE FRESH-GLASS FACIES. THE CENTRAL PART OF THE BASIN IS COMPOSED OF THE POTASSIUM FELDSPAR FACIES WHICH IS A MIXTURE OF FELDSPAR AND (OR) SEARLESITE. IT IS VERY DIFFICULT TO DISTINGUISH BETWEEN THE ZEOLITE AND POTASSIUM FELDSPAR FACIES IN THE FIELD. THE DEPOSITS ARE ESSENTIALLY UNDISTURBED (EXCEPT FOR EROSION) WITH DIPS OF 0 TO 7 DEGRESS BASINWARD.
General This record was originally a combination of information from Lake Tecopa (see the rest of the comments) and Ash Meadows, both NV and CA deposits. I moved the appropriate information to the correct records and modified this to only contain information about Lake Tecopa.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-91 Orris, Greta J. U.S. Geological Survey
Updater 06-JAN-11 Causey, J. Douglas U.S. Geological Survey Coded significant, changed name to Lake Tecopa, centered location

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.